Nozzle positioner for jet looms



May 7, 1968' J. H. NYDAM 3,381,721

NOZZLE POSITIONER FOR JET LOOMS Filed Jan. 16, 1967 K IIIII I I I I I] l l I| III1IT JOHN H.NYDHM BYQMQ' ATTORNEY United States Patent 3,381,721 NOZZLE POSITIONER FOR JET LOOMS John H. Nydam, North Uxbridge, Mass., assignor, by mesne assignments, to John Donald Marshall and Horace L. Bomar, trustees, The Carolina Patent Development Trust Filed Jan. 16, 1967, Ser. No. 609,561 3 Claims. (Cl. 139-427) ABSTRACT OF THE DISCLOSURE A nozzle positioner for fluid jet looms with universal adjustment means for selectively directing the nozzle and Weft propelling fluid jet emitted from the latter to predetermined and opposed points at the opposite side of the Background of the invention The invention relates to shuttleless looms of the type in which the weft is inserted into the warp shed by means of a Weft propelling fluid.

With this type of loom, it is necessary that a means be provided to change and adjust the so-called nozzle from which the fluid is emitted to obtain the most advantageous path of travel for the fluid jet and the weft yarn carried thereby.

Although the known adjustment devices for nozzles of fluid jet looms provide universal settings of unlimiting scope, they do not provide a simple and uncomplicated means of doing so.

With the known forms of adjustment devices the means for fixedly positioning the nozzle must be first slightly loosened and then the nozzle itself tapped or manually moved in the general direction of its desired position. Being universally mounted such adjustment means frequently result in excess or insufficient movement of the nozzle as well as unintentional twisting thereof resulting in a complete loss of setting and the subsequent tedious procedure of re-positioning and obtaining either the original or attempted nozzle setting.

The nozzle positioner according to the instant invention provides a positive means for obtaining a desired setting quickly and being of uncomplicated construction such adjustments can be obtained by means of a simple single tool such as a screwdriver or the like. The need for manual movement of the nozzle has been eliminated and a range of possible adjustment provided which will direct said nozzle and the weft propelling liquid to any desired and predetermined point at the opposite side of the loom.

Summary of the invention The nozzle positioner of the present invention is adapted to cooperate with a fixed supporting arm extending from the nozzle. The end of this arm most remote from the nozzle is adjustably held between first and second opposed plate-like members forming a part of the nozzle positioning means.

At least two pairs of opposed adjustable members such as screws are assembled in threaded holes provided in the first plate-like member with the tips or ends thereof in contact with one side of the nozzles supporting arm. The opposite side of this arm is provided with a recess which is in alignment with a similar recess provided in the second plate-like member. A ball is interposed between this side of the supporting arm and the second plate-like member with portions of the outer surface being in contact with the concave surfaces of each recess.

By simply letting off on certain adjustable members and taking up on others, the direct-ion of the nozzle can be adjusted to direct the fluid jet emitted therefrom to any predetermined point at the opposite side of the loom.

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Brief description of the drawing Description of the preferred embodiment Now referring to the figures of drawing, enough of a fluid jet loom is shown in FIG. 1 to serve as a basis for a detailed description of the invention applied thereto.

The nozzle for emitting the weft propelling fluid is depicted in the various figures of drawing by numeral 10 and as shown in FIGS. 1, 2 and 3 includes a pressure line 11 through which fluid under pressure is pumped from a suitable source of supply not shown.

The nozzle further includes a supporting arm 12 which is fixedly attached to the outer surface of said nozzle and extends outwardly therefrom. That end of the supporting arm most remote from the nozzle terminates in enlarged circular tip portion 13 (FIG. 3) and is adapted to be firmly held within a nozzle positioning means generally indicated by numeral 14.

This nozzle positioning means includes a pair of opposed plate-like members 15 and 16 disposed in spaced relation having spacers 17 and 18 assembled therebetween.

Cap screws 19 and 20 (FIGS. 1 and 3) provide the means for assembling the plate-like member 15 in spaced relation to member 16. Cap screw 19 assembles in a recessed hole in the upper portion of the plate member 15 with the shank portion passing through spacer 17 and the threaded portion thereof assembles in an aligned tapped hole provided in the plate member 16. Cap screw 20 assembles in a like manner in a recessed hole provided in the lower portion of plate member 15 and extending through spacer 18, the threaded portion assembles into an aligned tapped hole in plate member 16. Plate member 16 is firmly attached to a fixed support bracket 21 by means of screws 22 and 23 (FIGS. 2 and 3).

The enlarged circular tip portion 13 of the supporting arm 12 is firmly and adjustably positioned between the plate-like members 15 and 16 and as shown in FIG. 3 is centrally disposed relative to the plate member 15 and the cap screws 19 and 20.

Plate member 15 is provided with two pairs of tapped holes 24 (FIG. 4) which are adapted to receive round point adjusting screws 25. Each pair of screws 25 is disposed so that one screw of a pair is in opposed relation to the other of that pair and the tip portions of both pair are in contact with one side of the enlarged circular tip portion 13 of the supporting arm 12.

A ball member 26 (FIGS. 2 and 4) is interposed between plate member 16 and that side of the circular tip portion 13 adjacent thereto. This ball member is seated in aligned recesses 27 and 28 which form a part of the tip portion 13 and plate member 16 (FIG. 2) and provides a means for universal adjustment of the nozzle 10.

By simply loosening any one of the adjusting screws 25 and then tightening that screw opposed thereto the nozzle 10 can be quickly and accurately adjusted to direct the weft propelling fluid emitted therefrom to any desired or predetermined points at the opposite side of the loom. In FIG. 1 the letter Y depicts the weft yarn and the indicating arrow 29 the direction in which the fluid jet is emitted to carry said weft through the warp shed.

While one embodiment of the invention has been disclosed, it is to be understood that the inventive concept 83 may be carried out in a number of ways. This invention is, therefore, not to be limited to the precise details described, but is intended to embrace all variations and modifications thereof falling Within the spirit of the invention and the scope of the claims.

I claim:

1. For a shuttleless loom in which weft threads are inserted into the warp shed by means of a fluid jet, the improvement which comprises a nozzle for emitting a weft propelling fluid with a fixed supporting arm extending from said nozzle, a nozzle positioning means to receive and fixedly position the outer end of said supporting arm, said outer end being universally mounted in said positioning means, and at least two pairs of opposed adjustable members interposed between said supporting arm and said nozzle positioning means.

2. The shuttleless loom according to claim 1 wherein said opposed pairs of adjustable members are disposed between one side of said supporting arm and said nozzle positioning means.

3. The shuttleless loom according to claim 2 wherein a universal ball-joint is provided communicating with that side of said supporting arm opposite said opposed adjustable members and said nozzle positioning means.

References Cited UNITED STATES PATENTS 1,377,390 5/1921 Brooks 139-127 3,155,359 11/1964 Hogan et al 248-288 HENRY S. JAUDON, Primary Examiner. 

